| 12 |
|
* the base implementation does <em>not</em> allow <tt>null</tt> |
| 13 |
|
* elements. Methods {@link #add add}, {@link #remove remove}, and |
| 14 |
|
* {@link #element element} are based on {@link #offer offer}, {@link |
| 15 |
< |
* #poll poll}, and {@link #peek peek}, respectively but throw |
| 15 |
> |
* #poll poll}, and {@link #peek peek}, respectively, but throw |
| 16 |
|
* exceptions instead of indicating failure via <tt>false</tt> or |
| 17 |
|
* <tt>null</tt> returns. |
| 18 |
|
* |
| 19 |
< |
* <p> A <tt>Queue</tt> implementation that extends this class must |
| 19 |
> |
* <p>A <tt>Queue</tt> implementation that extends this class must |
| 20 |
|
* minimally define a method {@link Queue#offer} which does not permit |
| 21 |
|
* insertion of <tt>null</tt> elements, along with methods {@link |
| 22 |
< |
* Queue#peek}, {@link Queue#poll}, {@link Collection#size}, and a |
| 23 |
< |
* {@link Collection#iterator} supporting {@link |
| 24 |
< |
* Iterator#remove}. Typically, additional methods will be overridden |
| 25 |
< |
* as well. If these requirements cannot be met, consider instead |
| 26 |
< |
* subclassing {@link AbstractCollection}. |
| 22 |
> |
* Queue#peek}, {@link Queue#poll}, {@link Collection#size}, and |
| 23 |
> |
* {@link Collection#iterator}. Typically, additional methods will be |
| 24 |
> |
* overridden as well. If these requirements cannot be met, consider |
| 25 |
> |
* instead subclassing {@link AbstractCollection}. |
| 26 |
|
* |
| 27 |
|
* <p>This class is a member of the |
| 28 |
|
* <a href="{@docRoot}/../technotes/guides/collections/index.html"> |
